I gather that `certified` aircraft with 912`s have been obliged to run on
avgas, the consequence of which has been to require that the plugs be
changed every 25 hours.
Duncan McFadyean
-----Original Message-----
From: Grahamclk@aol.com <Grahamclk@aol.com>
europa@avnet.co.uk <europa@avnet.co.uk>
Date: Wednesday, April 11, 2001 4:30 PM
Subject: Re: Re: Fuel
>In a message dated 11/04/2001 09:52:25 GMT Daylight Time,
>john@crixbinfield.freeserve.co.uk forwarded:
>
>
>> Nigel Beale, who sells the Rotax engines here in th UK, has shown me a
head
>> and valves from a 912 which used 100LL. Both were heavily contaminated
with
>> yellow lead deposites to the extent that the valves could not operate
>> properly.
>
>Two years ago when returning from Cranfield I topped up half a tank of
>unleaded with 100LL. Temperatures were higher on the return flight and
>after landing the engine "detonated" dangerously with the ignition off
>until the carbs. emptied.. The engine seemed to have conditioned itself to
>unleaded and I have never put anything else in it since.
>
>Graham G-EMIN
>
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